Auditing your stock portfolio means analyzing its concentration, sector diversification, internal correlations, and the fundamental quality of each holding, to spot hidden risks before they materialize. A full audit takes 20 to 30 minutes with the right tools.
Why audit your portfolio regularly?
A portfolio that's never audited drifts silently: a position that grows faster than the others ends up dominating the whole, a sector riding a temporary rally becomes overweight, and correlated positions cancel out the diversification effect you thought you had. The audit resets your view of these imbalances before a sector shock exposes them brutally.
What are the 4 steps of a portfolio audit?
How do you measure portfolio concentration?
A rule of thumb: beyond 10-15% in a single holding (barring a deliberate exception), the portfolio depends heavily on one company's fate. The calculation is simple: position value ÷ total portfolio value × 100. Investors also use the HHI (Herfindahl-Hirschman Index), which sums the squared weight of each holding — the higher it is, the more concentrated the portfolio.
How do you check sector and geographic diversification?
You need to group positions by GICS sector (technology, healthcare, finance, energy, etc.) and by region (Europe, US, emerging markets). A portfolio made up of 60% US tech stocks isn't diversified even with 15 different holdings: these companies often react to the same macro catalysts (rates, AI cycle, dollar strength).
Why does correlation matter more than the number of holdings?
Holding 20 stocks doesn't protect you if 15 of them rise and fall together. Correlation measures how closely two stocks move together (from -1 to +1). Two European bank stocks, for instance, often show high correlation: holding both adds almost no extra diversification compared to holding just one.
How do you judge the fundamental quality of each holding?
Beyond overall structure, each position must be screened individually: financial strength (Piotroski F-Score), bankruptcy risk (Altman Z-Score), price trend (momentum and moving averages), and valuation level (P/E ratio). A holding can be well-placed within the overall allocation while still being fundamentally fragile.
How do you audit your portfolio with InvestIQ?
The free InvestIQ audit (/audit) imports your portfolio from a broker CSV export, with no account required, and returns within seconds the concentration, sector exposure, correlation alerts, and an InvestIQ Score (0-100, a synthesis of the 5 clusters — earnings, momentum, smart money, quality, valuation) for each holding. This gives you an instant view of whether the portfolio is structurally sound before even digging into each individual stock.
This is not investment advice.